Based on the cooperative model and interest pursuit between the main manufacturer and suppliers,this paper establishes the price game model. Considering the symbiotic relationship between the main manufacturer and suppliers, this study introduces the symbiotic coefficient to research the supply chain pricing problem under the interest distribution and analyzes the stability and chaos of the system by using complex system theory. Through the numerical simulation, it is found that the price adjustment speed of the supplier affects the stability of the supply chain system, and the symbiotic coefficient affects the interests of the main manufacturer and suppliers. The result shows that supply chain enterprises can maintain the system in a stable state by choosing the appropriate control coefficient, which offers a good reference for the price decision of the main manufacturer and suppliers.